Ops. Check
Airman 1st Class Austin Ford-Umfuhrer, 62nd Maintenance Squadron aircraft electrical and environmental specialist, cuts a safety wire from a bolt, Aug. 13, 2013, during an operational check of C-17 Globemaster III aircraft’s braking system, at Joint Base Lewis-McChord, Wash. Electrical and environmental specialists are responsible for inspecting, evaluating and performing maintenance on aircraft cabin pressurization, anti-icing, lighting, warning and fire systems. (U.S. Air Force photo/Airman 1st Class Jacob Jimenez)